Smart Contract Execution
TxTypeSmartContractExecution executes a smart contract with the given data. TxTypeSmartContractExecution is accepted only if "to" is a smart contract account.
Import the ethers and @kaiachain/ethers-ext modules to add kaia features on ethers.js.
Define sender address and sender private key
Set up the provider with the specified kairos testnet URL. A provider in ethers is a read-only abstraction to access the blockchain data.
Also, you can change the provider URL from kairos to quicknode
Create a sender's wallet using the sender's private key and the provider
Set the contract address you want to execute into the to field and set ABI
Create a contract instance with ethers.Contract, fill in params contractAddr, abi, provider. You can read and write the contract through this instance
Encode the function name and parameter with the encodeFunctionData function
Declare a transaction object
Send the tx to the blockchain. Function sendTransaction
internally signs with the private key of the account and then transmits it to the blockchain network.
The wait function returns the tx receipt if it is completed in the blockchain.